A passenger aircraft is composed of several millions of parts and requires thousands of persons to assemble. A four-lane highway bridge is another example of complexity. The first version of Word for Windows, a word processor released by Microsoft in 1989, required 55 person-years, resulted into 249,000 lines of source code, and was delivered 4 years late. Aircraft and highway bridges are usually delivered on time and within budget, whereas software is often not. Discuss what are, in your opinion, the differences between developing an aircraft, a bridge, and a word processor that would cause this situation.97 wordsAnswers:First and foremost, there are many factors that affect the net outcome for the completion of a complex system. Although one could argue that there are many complex systems such as computers and softwareprograms that are almost always never delivered on time. Another inherent issue with software systems is that each single point and reference code written could potentially serve as a source of error or failure.